Allen-Bradley 1783-BMS20CA – 16-Port Managed Ethernet Switch | Stratix 5700 Platform
Engineering Background
The Stratix 5700 series is Rockwell Automation’s flagship managed Ethernet switch platform, purpose-built for industrial control networks operating under IEC 62443 cybersecurity frameworks. The 1783-BMS20CA variant delivers 16 copper RJ-45 ports plus 4 combo SFP uplink slots in a DIN-rail-mounted form factor, enabling deterministic, high-availability Ethernet topologies in demanding manufacturing and process environments.
Product Positioning
Designed for procurement engineers integrating Allen-Bradley ControlLogix, CompactLogix, and GuardLogix systems, the 1783-BMS20CA serves as the network backbone for machine-level and cell-level Ethernet segments. Its native Studio 5000 / RSLogix 5000 Add-On Profile (AOP) integration eliminates the need for separate network management tools, reducing commissioning time and lifecycle cost.
Complete Technical Specifications
| Parameter | Value |
|---|---|
| Catalog Number | 1783-BMS20CA |
| Series / Platform | Stratix 5700 |
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Total Ports | 20 (16 × RJ-45 + 4 × Combo SFP) |
| Copper Ports | 16 × 10/100/1000BASE-T, Auto-MDI/MDIX |
| Uplink / SFP Ports | 4 × Combo (RJ-45 or SFP, 1 GbE) |
| Switching Capacity | 40 Gbps non-blocking |
| Forwarding Rate | 29.76 Mpps |
| MAC Address Table | 16,000 entries |
| VLAN Support | IEEE 802.1Q, up to 255 VLANs |
| QoS | IEEE 802.1p, 4 queues per port, DSCP |
| Redundancy Protocols | REP, RSTP (802.1w), MSTP (802.1s), DLR |
| Security | IEEE 802.1X, Port Security, ACL, DHCP Snooping |
| Management | Web GUI, CLI (SSH/Telnet), SNMP v1/v2c/v3, Studio 5000 AOP |
| Input Voltage | 24 VDC (18–32 VDC range) |
| Power Consumption | ≤ 35 W (typical) |
| Operating Temperature | 0 °C to +60 °C |
| Storage Temperature | −40 °C to +85 °C |
| Relative Humidity | 5–95% non-condensing |
| Mounting | DIN Rail (EN 50022) |
| Enclosure Rating | IP30 |
| Dimensions (H×W×D) | Approx. 145 × 75 × 120 mm |
| Weight | ~1,700 g |
| Certifications | UL 508, CE, cULus, ATEX Zone 2 (optional) |
| Country of Origin | USA |
Proven Application Environments
- Automotive Assembly Lines — Backbone Ethernet for robot controllers, vision systems, and safety PLCs in high-EMI press and weld cells.
- Oil & Gas / Petrochemical — Redundant ring topologies (REP/DLR) for SCADA and DCS integration in Class I Div 2 adjacent areas.
- Food & Beverage Processing — Washdown-adjacent panel installations with VLAN segmentation isolating OT from IT traffic.
- Water / Wastewater Treatment — Wide-temperature operation supporting outdoor panel installations with SNMP-based remote monitoring.
- Discrete Manufacturing (MES Integration) — Cell-level switch aggregating EtherNet/IP traffic from VFDs, servo drives, and HMIs to plant-floor MES servers.
Engineering Advantages
- Native EtherNet/IP Integration — AOP plug-in for Studio 5000 enables port-level diagnostics, VLAN configuration, and alarm management directly from the PLC programming environment.
- Device Level Ring (DLR) Support — Sub-3 ms failover for ring topologies without a dedicated ring controller, critical for motion-coordinated systems.
- Stratix SmartPort Technology — One-click port role assignment (Switch, Router, Desktop, IP Camera, Wireless) auto-applies best-practice configurations, reducing misconfiguration risk.
- Dual-Input Power Redundancy — Supports redundant 24 VDC feeds for continuous operation during PSU maintenance or failure.
- IEC 62443-4-2 Alignment — Port-level ACLs, 802.1X authentication, and DHCP snooping support defense-in-depth OT security architectures.
System Architecture & Signal Flow
In a typical ControlLogix-based cell, the 1783-BMS20CA occupies the cell-level aggregation tier:
- Uplink (SFP/Combo) → Plant backbone switch or Stratix 8300 distribution layer via fiber or copper 1 GbE trunk.
- Copper Ports 1–8 → EtherNet/IP I/O adapters, servo drives (Kinetix), and VFDs (PowerFlex) on dedicated VLAN.
- Copper Ports 9–14 → HMI panels (PanelView Plus), barcode scanners, vision systems on operator VLAN.
- Copper Ports 15–16 → Spare / future expansion or DLR ring closure ports.
- VLAN Trunking → 802.1Q tagged trunk to upstream switch carries all VLANs; inter-VLAN routing handled at distribution layer.
Sourcing & Quality Verification
- All units sourced from authorized distributors, OEM overstock, or verified surplus channels with full chain-of-custody documentation.
- Pre-shipment inspection includes: visual inspection, label authenticity check, firmware version verification, and functional power-on test.
- Catalog number, date code, and country-of-origin label verified against Rockwell Automation product authentication database.
- Units shipped in anti-static packaging with original accessories (where available) and inspection report.
- Counterfeit-free guarantee backed by Konmask.com quality assurance policy.
Procurement Process
- Step 1 — Inquiry: Submit RFQ via product page or email support@konmask.com with required quantity and delivery timeline.
- Step 2 — Quote & Lead Time: Receive formal quotation with stock availability, unit price (HKD/USD), and estimated ship date within 24 hours.
- Step 3 — Order Confirmation: Purchase order accepted via Shopify checkout, T/T bank transfer, or approved credit terms for qualified accounts.
- Step 4 — QC & Dispatch: Unit undergoes final inspection; tracking number and inspection report issued within 1–2 business days.
- Step 5 — Delivery: DHL / FedEx / SF Express international shipping; customs documentation (commercial invoice, packing list, COO) provided.
Technical FAQ
Q: Is the 1783-BMS20CA compatible with ControlLogix L7x and L8x controllers?
A: Yes. The AOP is compatible with Studio 5000 v21 and later, supporting all current ControlLogix, CompactLogix, and GuardLogix platforms.
Q: Can this switch operate in a DLR ring without a dedicated ring supervisor?
A: Yes. The 1783-BMS20CA supports DLR ring supervisor functionality natively, eliminating the need for a separate 1783-ETAP or dedicated supervisor device.
Q: What SFP transceivers are compatible?
A: Rockwell-qualified SFPs include 1783-SFP1GSX (multimode fiber), 1783-SFP1GLX (single-mode fiber), and 1783-SFP1GCX (copper). Third-party SFPs may function but are not officially supported.
Q: Is firmware upgrade support available?
A: Konmask can advise on firmware version compatibility. Firmware files are available through Rockwell Automation’s Product Compatibility and Download Center (PCDC) with a valid service contract.
Q: Do you provide a warranty?
A: All units carry a 90-day Konmask.com functional warranty. Extended warranty and exchange programs available upon request.
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